CLAY n.
rom such particles. I also am formed out of the clay. Job xxxiii. 6. The earth is covered thick with other clay, Which her own clay shall cover. Byron. Bowlder clay. See under Bowlder. -- Brick clay, the common clay, containing some iron, and therefore turning red when burned. -- Clay cold, cold as clay or earth; lif…
CLOG n.
ect the feet from wet, or to increase the apparent stature, and having, therefore, a very thick sole. Cf. Chopine. In France the peasantry goes barefoot; and the middle sort . . . makes use of wooden clogs. Harvey. Clog almanac, a primitive kind of almanac or calendar, formerly used in England, made by cutting notches…
COAGULATION n.
The change from a liquid to a thickened, curdlike, insoluble state, not by evaporation, but by some kind of chemical reaction; as, the spontaneous coagulation of freshly drawn blood; the coagulation of milk by rennet, or acid, and the coagulation of egg albumin by heat. Coagulation is generally the change of an albumin…
COAL TAR n.
A thick, black, tarry liquid, obtained by the distillation of bituminous coal in the manufacture of illuminating gas; used for making printer's ink, black varnish, etc. It is a complex mixture from which many substances have been obtained, especially hydrocarbons of the benzene or aromatic series.